Casio
MRW-230H Series
Casio (Japan)
Ref. MRW-230H-1E3V
Edition Manufacture
MRW-230H Series
Casio
MRW-230H
“A marine-styled Casio with a rotating timer bezel topped by an aluminum ring, 100m water resistance and a day-date window, on a resin case and band. Three colourways; the green bezel is the one we show.”
From
Under $50
Approx. retail, verified September 2026 — check retailer for current price
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Every colorway — same watch underneath
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Ref. MRW-230H-1E3V
Manufacture
Complication
Day-Date, Rotating Timer Bezel
The Editorial
A marine-styled Casio with a rotating timer bezel topped by an aluminum ring, 100m water resistance and a day-date window, on a resin case and band. Three colourways; the green bezel is the one we show.
Frequently Asked
Questions About the MRW-230H
The Casio MRW-230H offers A marine-styled Casio with a rotating timer bezel topped by an aluminum ring, 100m water resistance and a day-date window, on a resin case and band. Three colourways; the green bezel is the one we show. It features Quartz and is built to the standards expected of Casio's manufacturing heritage.
The Casio MRW-230H uses the Quartz with Approx. 3-year battery (SR626SW) of power reserve. The case measures 44.6mm (47.9 x 44.6 x 12.3mm) with 100m (10 ATM) water resistance.
The Casio MRW-230H (reference MRW-230H-1E3V) is sold on Amazon and through authorized dealers. Prices move, so check the current price on Amazon rather than relying on any figure quoted elsewhere.
Yes. The Casio MRW-230H is a well-regarded sport watch. A marine-styled Casio with a rotating timer bezel topped by an aluminum ring, 100m water resistance and a day-date window, on a resin case and band. Three colourways; the green bezel is the one we show. It competes favorably with others in its category.
The Casio MRW-230H has 100m (10 ATM). It is suitable for everyday wear including hand washing and rain exposure.
Luminescence
Legibility in
Absolute Darkness.
Use the interactive flashlight to see how the luminous indices and hands read in the dark. The lume compound and its glow duration vary by reference; the specification table above lists what the maker publishes for this one.
Hover to Reveal Lume
The Maison
Casio
“Indestructible by Design”
Founded
1946
Origin
Tokyo, Japan
House Style
Tactical utility, multi-layer shock absorption, cult collectibility.
Inventors of the G-Shock — the most indestructible watch ever made.
Casio engineer Kikuo Ibe spent two years and broke over 200 prototypes to develop the original G-Shock in 1983, designed to survive a 10-meter drop. Forty years later G-Shock is worn by Navy SEALs, mountaineers, and luxury watch collectors alike. The CasiOak (GA-2100 series) reinterprets that DNA in Royal Oak proportions.
Technical Prowess
Casio MRW-230H Specifications
| Specification | Details |
|---|---|
| Reference | MRW-230H-1E3V |
| Origin | Casio (Japan) |
| Case Size | 44.6mm (47.9 x 44.6 x 12.3mm) |
| Case Material | Resin case, aluminum bezel ring |
| Movement | Quartz |
| Caliber Class | Casio Quartz (Battery) |
| Power Reserve | Approx. 3-year battery (SR626SW) |
| Crystal | Resin Glass |
| Water Resistance | 100m (10 ATM) |
| Complications | Day-Date, Rotating Timer Bezel |
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Specifications from the manufacturer, price shown as a band. Sold through Amazon; check the seller before you buy.
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Compare
How Does the MRW-230H Stack Up?
Casio MRW-230H vs Tag Heuer Carrera Chronograph
Tag Heuer's chronograph meets Casio's timepiece
Casio MRW-230H vs Tissot PRX Powermatic 80
Two timepieces compared — $500–$1,000 vs Under $50
Casio MRW-230H vs Breitling Navitimer B01
Breitling's chronograph meets Casio's timepiece
Casio MRW-230H vs Citizen Tsuyosa Automatic
Two timepieces compared — $250–$500 vs Under $50
Casio MRW-230H vs Junghans Max Bill Chronoscope
Junghans's chronograph meets Casio's timepiece
Casio MRW-230H vs Omega Speedmaster Professional
Omega's chronograph meets Casio's timepiece
Casio MRW-230H vs Tudor Black Bay 58
Tudor's diver meets Casio's timepiece
Casio MRW-230H vs Blancpain Fifty Fathoms 45mm (titanium, blue dial)
Blancpain's diver meets Casio's timepiece
Casio MRW-230H vs Blancpain Villeret Quantième Complet 8 Jours (red gold, enamel dial)
Blancpain's dress watch meets Casio's timepiece
Casio MRW-230H vs Blancpain Villeret 8 Jours (platinum, black dial, limited edition)
Two timepieces compared — $25,000+ vs Under $50
Casio MRW-230H vs Blancpain Villeret Quantième Complet (18k red gold, blue dial)
Blancpain's dress watch meets Casio's timepiece
Casio MRW-230H vs Boyarca Pilot Automatic
Two timepieces compared — $50–$100 vs Under $50
Casio MRW-230H vs Breguet Classique 7137 Power Reserve Moonphase (18k yellow gold)
Breguet's dress watch meets Casio's timepiece
Casio MRW-230H vs Breguet Marine 5517 (18k rose gold, wave dial)
Two timepieces compared — $25,000+ vs Under $50
Casio MRW-230H vs Breguet Marine Dual Time 5857 (18k rose gold, rubber)
Two timepieces compared — $25,000+ vs Under $50
Casio MRW-230H vs Breitling Chronoliner (18k red gold)
Breitling's chronograph meets Casio's timepiece
Casio MRW-230H vs Breitling Navitimer 1959 Edition (18k red gold, 159 pieces)
Breitling's chronograph meets Casio's timepiece
Casio MRW-230H vs Bulova Classic Automatic 98A139
Two timepieces compared — $250–$500 vs Under $50
Casio MRW-230H vs Bulova Devil Diver Oceanographer 96B350
Bulova's diver meets Casio's timepiece
Casio MRW-230H vs Bulova Surveyor Automatic
Bulova's dress watch meets Casio's timepiece
Casio MRW-230H vs Cartier Ballon Bleu 33 Automatic
Two timepieces compared — $5,000–$10,000 vs Under $50
Casio MRW-230H vs Casio AE1200 World Time "Casio Royale"
Two timepieces compared — Under $50 vs Under $50
Casio MRW-230H vs Casio Duro MDV106 Black
Casio's diver meets Casio's timepiece
Casio MRW-230H vs Casio F-91W
Two timepieces compared — Under $50 vs Under $50
Casio MRW-230H vs Casio MTP-S120L Solar Field
Casio's timepiece meets Casio's field watch
Casio MRW-230H vs Casio Pro Trek PRG270-1
Two timepieces compared — Under $50 vs $150–$250
Casio MRW-230H vs Casio Pro Trek PRG340-1
Two timepieces compared — Under $50 vs $150–$250
Casio MRW-230H vs Casio Pro Trek PRG601-1
Two timepieces compared — Under $50 vs $250–$500
Casio MRW-230H vs Casio Pro Trek PRW-B1000-1
Two timepieces compared — Under $50 vs $500–$1,000
Casio MRW-230H vs Casio Pro Trek PRW3500T-7
Casio's timepiece meets Casio's diver
Casio MRW-230H vs Casio Vintage A168WA
Casio's timepiece meets Casio's chronograph
Casio MRW-230H vs Citizen Promaster Aqualand BN2038
Casio's timepiece meets Citizen's diver
Casio MRW-230H vs Citizen Eco-Drive Weekender Avion Field
Casio's timepiece meets Citizen's field watch
Casio MRW-230H vs Citizen Eco-Drive Weekender Garrison
Casio's timepiece meets Citizen's field watch
Casio MRW-230H vs Citizen Blue Angels Navihawk 40mm
Casio's timepiece meets Citizen's chronograph
Casio MRW-230H vs Citizen Promaster Air Nighthawk
Casio's timepiece meets Citizen's diver
Casio MRW-230H vs Citizen Promaster Sea Eco-Drive Diver
Casio's timepiece meets Citizen's diver
Casio MRW-230H vs Citizen Promaster Sky CB0248
Casio's timepiece meets Citizen's pilot watch
Casio MRW-230H vs Citizen Promaster Skyhawk A-T
Casio's timepiece meets Citizen's chronograph
Casio MRW-230H vs Citizen Tsuyosa Automatic (Green Dial)
Two timepieces compared — Under $50 vs $250–$500
Casio MRW-230H vs Citizen Eco-Drive Weekender Chronograph
Casio's timepiece meets Citizen's chronograph
Casio MRW-230H vs Frederique Constant Slimline Moonphase Manufacture
Casio's timepiece meets Frederique Constant's dress watch
Casio MRW-230H vs Frederique Constant Classic Quartz Moonphase
Casio's timepiece meets Frederique Constant's dress watch
Casio MRW-230H vs Frederique Constant Highlife Automatic COSC
Two timepieces compared — Under $50 vs $1,500–$2,500
Casio MRW-230H vs Girard-Perregaux Laureato Chronograph 42mm (steel, blue dial)
Casio's timepiece meets Girard-Perregaux's chronograph
Casio MRW-230H vs Grand Seiko Godzilla 65th Anniversary SBGA405
Casio's timepiece meets Grand Seiko's diver
Casio MRW-230H vs Casio G-Shock GA-B2100 CasiOak
Casio's timepiece meets Casio's diver
Casio MRW-230H vs Casio G-Shock DW-5600 Square
Casio's timepiece meets Casio's diver
Casio MRW-230H vs Hamilton Khaki Field Mechanical 38mm
Casio's timepiece meets Hamilton's field watch
Casio MRW-230H vs Hamilton Intra-Matic Auto Chronograph
Casio's timepiece meets Hamilton's chronograph
Casio MRW-230H vs Hamilton Khaki Aviation Pilot Auto
Casio's timepiece meets Hamilton's pilot watch
Casio MRW-230H vs Hamilton Ventura Quartz
Two timepieces compared — Under $50 vs $500–$1,000
Casio MRW-230H vs Hublot Big Bang 44mm (rose gold, pavé diamonds)
Casio's timepiece meets Hublot's chronograph
Casio MRW-230H vs Hublot Big Bang Unico Titanium 42
Casio's timepiece meets Hublot's chronograph
Casio MRW-230H vs Invicta Pro Diver Automatic
Casio's timepiece meets Invicta's diver
Casio MRW-230H vs Invicta Pro Diver Automatic 23681
Casio's timepiece meets Invicta's diver
Casio MRW-230H vs Junghans Form A Automatic
Casio's timepiece meets Junghans's dress watch
Casio MRW-230H vs Hamilton Khaki Field Automatic
Casio's timepiece meets Hamilton's field watch
Casio MRW-230H vs Longines HydroConquest Automatic
Casio's timepiece meets Longines's diver
Casio MRW-230H vs Longines Master Collection Moonphase
Casio's timepiece meets Longines's dress watch
Casio MRW-230H vs Bulova Lunar Pilot Chronograph
Casio's timepiece meets Bulova's chronograph
Casio MRW-230H vs Maurice Lacroix Aikon Automatic
Casio's timepiece meets Maurice Lacroix's diver
Casio MRW-230H vs Mido Multifort Powerwind Chronometer
Casio's timepiece meets Mido's chronograph
Casio MRW-230H vs Mido Ocean Star GMT
Casio's timepiece meets Mido's diver
Casio MRW-230H vs OLEVS Moon Phase Dress Watch
Casio's timepiece meets OLEVS's dress watch
Casio MRW-230H vs Omega Constellation Co-Axial 38mm (18k red gold)
Two timepieces compared — Under $50 vs $25,000+
Casio MRW-230H vs Omega Seamaster Planet Ocean 600M 43.5mm (Sedna gold, blue ceramic)
Casio's timepiece meets Omega's chronograph
Casio MRW-230H vs Omega Seamaster Diver 300M 42mm (Sedna gold, rubber)
Casio's timepiece meets Omega's chronograph
Casio MRW-230H vs Omega Speedmaster Apollo XVII 45th Anniversary
Casio's timepiece meets Omega's chronograph
Casio MRW-230H vs Orient Bambino Version 2
Casio's timepiece meets Orient's dress watch
Casio MRW-230H vs Orient Bambino Open Heart
Two timepieces compared — Under $50 vs $250–$500
Casio MRW-230H vs Orient Kamasu Automatic Diver
Casio's timepiece meets Orient's diver
Casio MRW-230H vs Orient Mako 40 Green
Casio's timepiece meets Orient's diver
Casio MRW-230H vs Orient Sun & Moon
Casio's timepiece meets Orient's dress watch
Casio MRW-230H vs Oris Aquis Date Calibre 400
Casio's timepiece meets Oris's diver
Casio MRW-230H vs Oris Big Crown Pointer Date
Casio's timepiece meets Oris's pilot watch
Casio MRW-230H vs Patek Philippe Calatrava 6119R
Casio's timepiece meets Patek Philippe's dress watch
Casio MRW-230H vs Seiko Presage Cocktail Time
Casio's timepiece meets Seiko's dress watch
Casio MRW-230H vs Seiko Presage Cocktail Time SRPE15
Two timepieces compared — Under $50 vs $250–$500
Casio MRW-230H vs Seiko Presage SSA425 Open Heart
Two timepieces compared — Under $50 vs $250–$500
Casio MRW-230H vs Seiko Prospex "Turtle"
Casio's timepiece meets Seiko's diver
Casio MRW-230H vs Tissot PRX Powermatic 80 35mm
Two timepieces compared — Under $50 vs $500–$1,000
Casio MRW-230H vs Timex Q Timex Reissue
Casio's timepiece meets Timex's diver
Casio MRW-230H vs Rado Captain Cook High-Tech Ceramic
Casio's timepiece meets Rado's diver
Casio MRW-230H vs Rado True Square Automatic
Two timepieces compared — Under $50 vs $1,500–$2,500
Casio MRW-230H vs Raymond Weil Freelancer Open Heart
Two timepieces compared — Under $50 vs $1,500–$2,500
Casio MRW-230H vs Rolex Datejust 31 68278 (18k yellow gold, white Roman dial)
Two timepieces compared — Under $50 vs $10,000–$25,000
Casio MRW-230H vs Rolex Datejust 36 "Wimbledon"
Two timepieces compared — Under $50 vs $10,000–$25,000
Casio MRW-230H vs Rolex Datejust 41
Casio's timepiece meets Rolex's dress watch
Casio MRW-230H vs Rolex Day-Date 36 "President"
Two timepieces compared — Under $50 vs $25,000+
Casio MRW-230H vs Rolex Day-Date 18238 (18k yellow gold, blue diamond dial)
Two timepieces compared — Under $50 vs $25,000+
Casio MRW-230H vs Rolex Explorer 40
Two timepieces compared — Under $50 vs $10,000–$25,000
Casio MRW-230H vs Rolex Explorer II 42
Two timepieces compared — Under $50 vs $10,000–$25,000
Casio MRW-230H vs Rolex GMT-Master II "Batman"
Two timepieces compared — Under $50 vs $10,000–$25,000
Casio MRW-230H vs Rolex Milgauss 40
Two timepieces compared — Under $50 vs $10,000–$25,000
Casio MRW-230H vs Rolex Oyster Perpetual 41
Two timepieces compared — Under $50 vs $10,000–$25,000
Casio MRW-230H vs Rolex Oysterquartz Day-Date 19018 (18k yellow gold)
Casio's timepiece meets Rolex's chronograph
Casio MRW-230H vs Rolex Submariner Date 41 "Starbucks"
Casio's timepiece meets Rolex's diver
Casio MRW-230H vs Seiko 5 Sports GMT SSK001
Casio's timepiece meets Seiko's GMT watch
Casio MRW-230H vs Seiko 5 Sports 5KX
Two timepieces compared — Under $50 vs $250–$500
Casio MRW-230H vs Seiko Prospex Alpinist
Casio's timepiece meets Seiko's diver
Casio MRW-230H vs Seiko Prospex Samurai SRPL13
Casio's timepiece meets Seiko's diver
Casio MRW-230H vs Seiko Prospex Solar Diver SNE595
Casio's timepiece meets Seiko's diver
Casio MRW-230H vs Seiko Prospex Sea Solar SNE597
Casio's timepiece meets Seiko's diver
Casio MRW-230H vs Seiko 5 SNKL23
Two timepieces compared — Under $50 vs $100–$150
Casio MRW-230H vs Seiko Prospex 62MAS Modern Re-interpretation
Casio's timepiece meets Seiko's diver
Casio MRW-230H vs Seiko Prospex Samurai SRPF03
Casio's timepiece meets Seiko's diver
Casio MRW-230H vs Seiko Chronograph SSB427 "Blue Panda"
Casio's timepiece meets Seiko's chronograph
Casio MRW-230H vs Stauer 1920s Retrograde
Casio's timepiece meets Stauer's dress watch
Casio MRW-230H vs Tag Heuer Aquaracer Professional 300
Casio's timepiece meets Tag Heuer's diver
Casio MRW-230H vs Timex Expedition Metal Field "Scout"
Casio's timepiece meets Timex's field watch
Casio MRW-230H vs Timex Marlin Automatic 40mm
Two timepieces compared — Under $50 vs $250–$500
Casio MRW-230H vs Timex Weekender Chronograph
Casio's timepiece meets Timex's chronograph
Casio MRW-230H vs Tissot Chemin des Tourelles Powermatic 80
Casio's timepiece meets Tissot's dress watch
Casio MRW-230H vs Tissot Gentleman Powermatic 80 Silicium
Casio's timepiece meets Tissot's dress watch
Casio MRW-230H vs Tissot Le Locle Powermatic 80
Casio's timepiece meets Tissot's dress watch
Casio MRW-230H vs Tissot Seastar 1000 Automatic
Casio's timepiece meets Tissot's diver
Casio MRW-230H vs Ulysse Nardin Executive Skeleton Tourbillon 45mm (titanium)
Two timepieces compared — Under $50 vs $25,000+
Casio MRW-230H vs Ulysse Nardin Marine Chronometer Manufacture 43mm (18k rose gold)
Casio's timepiece meets Ulysse Nardin's chronograph
Casio MRW-230H vs Ulysse Nardin Executive Skeleton X 42mm (18k rose gold, blue)
Two timepieces compared — Under $50 vs $25,000+
Casio MRW-230H vs Zenith Chronomaster El Primero Open Power Reserve (18k rose gold)
Casio's timepiece meets Zenith's chronograph
Casio MRW-230H vs Zenith Chronomaster El Primero
Casio's timepiece meets Zenith's chronograph
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